Improvement in lamp-burners



SAMUEL W. FOWLER.

Lamp Burner.

Patented April 16, 1872.

UNITED STATES PATENT OFFICE.

SAMUEL W. FOWLER, OF BRQOKLYN, NEW Y'ORK.

' IMPROVEMENT IN LAMP-BURNERS.

Specification forming part of Letters Patent No. 125,672, dated April16, 1872. e

do hereby declare that the following is a full,

clear, and exact description of the same, reference being had to theaccompanying drawing which forms part of this specification.

My invention consists, first, in the combination, in a lamp-burner, of adome-shaped baseplate, with a cone having a corresponding dome-shapedbase and a cupola top, whereby an exceeding efficient burner isproduced, as will be hereinafter more particularly set forth.

In the accompanying drawing, Figure l is a side elevation of alamp-burner containing my present improvements. Fig. 2 is a verticalcentral section of the same taken on the plane of the line so :r,Fig. 1. Fig. 3 is an inverted plan view of the base-plate. Fig. 4 is asection of base plate taken on the line 3 y, Fig. 3, and enlarged fromFig. 3.

A designates the base-plate of the burner, which baseplate may bestamped out of a single disk of metal by stamping-dies and presses inthe usual way. This base-plate is provided with a circular horizontalrim, to, for the base of the chimney to rest upon, with a concentricgroove or depression, b, for receiving and confining the edge of thecone B when adjusted in place; and the base-plate then proceeds upwardto the wick-tube, forming a dome, 0. (See Fig. 2.) The said dome and rimare provided with the requisite number of perforations to supply theflame with air. The bodyD of the burner is in the example shown stampeden tire out of a single piece of metal, and provided with arms at whichspan the space under the dome c, and are connected at their ends to therim of the base-plate, as will be seen by reference to Fig. 3. The bodyis provided with a wick-tube, G, and the ratchet-wheels e and shaft f inthe usual manner. E designates the chimney-holdin g springs, which arein the present instance arranged to hold a chimney of the sun-burnerclass, by outside pressure, in the usual way. The method of connectingthe chimney-holding springs to the base-plate will be understood byreference to Figs. 2, 3, and 4. The lower end of a spring, E, isinserted through a slot in the base-plate, and, either before or ter.

after being so inserted, is bent at right angles to the upper portion ofsaid spring; this horizontal portion 9 lies up against the under side ofthe rim a, and is there held securely in place by bending over and uponit, on opposite sides,

tongues or cars j, which have been stamped down from the metal of thebaseplate, as will be understood by reference to Figs. 3 and 4. Ipreferably provide the spring, when cutting it out, with arecess onopposite edges, as seen in Fig. 3, so that the ears or tongues j mayclasp the same around a neck portion, and thereby produce a more securefastening. In lieu of ears or tongues upon the base-plate, I can providethe springs with ears or tongues, and clasp the latter to thebase-plate; as, for instance, a tongue, one or more, projecting from theportion 9 of the spring could be passed up through the rim a, andpressed down upon it but I prefer to provide the base-plate with thetongues or cars to clasp the spring, for the reason that it is made ofsofter metal than the spring, and can therefore be more easilymanipulated, and it possesses less liability to crush or break. Thismethod of fastening entirely dispenses with the soldering and rivetingof the spring to the base-plate, as at present practiced, and itdecreases the cost of manufacture, and produces a more reliable,durable, and neater fastening in all respects. The cone B is a closecone, so called. The lower part 7c of the cone is domeshaped, andcorresponds in form to the dome 0, though the former is,

preferably, made more crowning than the lat- The dome 70 runs upsufficiently high to include the highest row of perforations through thedome c. From the top of this dome 7c the cone proceeds upward, and formsa sort of cupola, m, which surrounds the wick-tube; and this cupola m isprovided at its top with the usual or any suitable slot for permittingthe flame to emerge. This cone is provided with the commontongue-and-slot fastening, as shown in Fig.2, whereby it may be securedto the base-plate.

I have found by repeatedcompetitive tests and trials between my improvedburner, herein above described, and the best burners in the market, thatI have accomplished a most desirable result: that I have, in fact,produced a burner which gives abetter and steadier light than any withwhich I am acquainted, not even excepting the celebrated. Drummond-LightBurner, of which I am also the inventor. This result I attribute to theshape of the cone, in connection with the dome-shaped base-plate, theair being supplied in sufficient quantity and conducted in such mannerto the flame as to insure a perfect combustion, thereby producing anintense bright white light.

What I claim as my invention, and desire to secure by Letters Patent,is-

In a lamp-burner, I claim the combination,

. with the base-plate A constructed with the the cone corresponding inshape to the domepart c of the base-plate, and the upper end ofwick-tube so arranged as to project up into and be surrounded by thecupola m of the I cone, substantially as herein specified.

SAMUEL W. FOWLER.

Witnesses:

JNo. E. SAYLEs, M. M. LIVINGSTON.

